GeForce GT 220 GDDR3 vs GeForce GTX 970

Intro

Compare those specs to the GeForce GTX 970, which features GPU clock speed of 1050 MHz, and 4096 MB of GDDR5 RAM running at 1750 MHz through a 256-bit bus. It also is comprised of 1664 SPUs, 104 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
GeForce GTX 970		145 Watts
	Difference: 87 Watts (150%)

Memory Bandwidth

Performance-wise, the GeForce GTX 970 should theoretically be quite a bit superior to the GeForce GT 220 GDDR3 overall. (explain)

GeForce GTX 970		224000 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 191616 (592%)

Texel Rate

The GeForce GTX 970 is quite a bit (more or less 992%) faster with regards to anisotropic filtering than the GeForce GT 220 GDDR3. (explain)

GeForce GTX 970		109200 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 99200 (992%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 970 is the winner, by far. (explain)

GeForce GTX 970		67200 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 62200 (1244%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of information (in units of MB per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.